Dual Colour Z Liquid TimerThis engaging three minute timer features dual coloured liquid going down in a Z formation, creating a cool visual effect, making it an exciting educational resource. Multi coloured droplets bounce down a staggered plane in the shape of a Z at the same time, providing visual stimulation Watch as the colourful droplets make their way down, only to reform again into a larger clump at the bottom. This educational sensory toy can be ideal for use as a